How can error_reporting be used to identify undefined variables in PHP?

To identify undefined variables in PHP, you can enable error reporting by setting the error_reporting function to E_ALL. This will display notices for undefined variables, making it easier to spot and fix these issues in your code. 

<?php
error_reporting(E_ALL);

$variable1 = "Hello";
echo $variable1;

// Trying to echo an undefined variable
echo $undefinedVariable;
?>

Related Questions